CVE-2018-16974 : Exploit Details and Defense Strategies

A vulnerability concerning PHP code execution has been identified in Elefant CMS versions prior to 2.0.7. This vulnerability can be exploited through the filemanager/upload/drop.php application by removing the .htaccess file using /filemanager/api/rm/.htaccess and subsequently utilizing a filename that concludes with .php along with space characters as a means to bypass the blacklist.

Understanding CVE-2018-16974

An issue was discovered in Elefant CMS before 2.0.7. There is a PHP Code Execution Vulnerability in apps/filemanager/upload/drop.php by using /filemanager/api/rm/.htaccess to remove the .htaccess file, and then using a filename that ends in .php followed by space characters (for bypassing the blacklist).

What is CVE-2018-16974?

CVE-2018-16974 is a vulnerability in Elefant CMS versions prior to 2.0.7 that allows for PHP code execution through specific file manipulation techniques.

The Impact of CVE-2018-16974

This vulnerability can be exploited by attackers to execute arbitrary PHP code on the affected system, potentially leading to unauthorized access, data theft, or further compromise of the system.

Technical Details of CVE-2018-16974

Vulnerability Description

The vulnerability exists in Elefant CMS versions before 2.0.7, allowing attackers to execute PHP code by manipulating filenames and bypassing the blacklist.

Affected Systems and Versions

Elefant CMS versions prior to 2.0.7

Exploitation Mechanism

Attackers can exploit this vulnerability by removing the .htaccess file using /filemanager/api/rm/.htaccess and then using a filename ending in .php with space characters to evade the blacklist.

Mitigation and Prevention

Immediate Steps to Take

Update Elefant CMS to version 2.0.7 or later to patch the vulnerability.
Monitor file uploads and restrict file types to prevent malicious uploads.

Long-Term Security Practices

Regularly update and patch all software and applications to address known vulnerabilities.
Implement strong access controls and authentication mechanisms to limit unauthorized access.

Patching and Updates

Ensure timely installation of security patches and updates provided by Elefant CMS to mitigate the risk of exploitation.